Electromagnetic shielding green composite board

Abstract

The electromagnetic shielding green composite board is characterized in that a butt joint groove is formed in the side face of a wallboard body, a butt joint block is arranged on the side face, opposite to the butt joint groove, of the wallboard body, and the butt joint block corresponds to the butt joint groove in position; a wallboard body outer surface layer is arranged on the front face of the wallboard body, a wallboard body inner surface layer is arranged on the back face of the wallboard body, the butt joint block is exposed out of one side of the wallboard body outer surface layer, and the butt joint groove is exposed out of one side of the wallboard body inner surface layer. The wallboard body comprises a gypsum board base layer, an electromagnetic shielding function layer and a composite conductive wave-absorbing layer, the front face of the composite conductive wave-absorbing layer is connected with the outer surface layer of the wallboard body through the gypsum board base layer, and the back face of the composite conductive wave-absorbing layer is connected with the gypsum board base layer through the electromagnetic shielding function layer. The electromagnetic shielding functional layer is connected with the inner surface layer of the wallboard main body through the gypsum board base layer. The utility model has the advantages of low cost, simple installation, and high stability and structural compatibility.

Description

Technical Field

[0001] This utility model relates to the field of composite board equipment technology, and in particular to an electromagnetic shielding green composite board. Background Technology

[0002] In today's technologically advanced world, the widespread use of various electronic devices has led to ubiquitous electromagnetic radiation, posing a potential threat to human health and the normal operation of electronic equipment. Currently, traditional wood-based panels, a widely used indoor building material, lack practical designs for electromagnetic radiation protection, leaving a gap in this field. In areas near communication base stations, densely populated electronic equipment locations, and areas with stringent electromagnetic environment requirements, using partition panels capable of resisting electromagnetic waves can protect indoor personnel and equipment from electromagnetic interference, ensuring human health and normal equipment operation. Developing high-performance electromagnetic interference shielding materials is crucial for mitigating electromagnetic pollution.

[0003] Industrial by-product gypsum, as an industrial waste, occupies a large amount of land and pollutes the environment and groundwater resources when piled up. Effectively utilizing and transforming it into building materials is of great significance for green carbon reduction.

[0004] In the prior art, Chinese patent with authorization announcement number CN211080859U discloses a prefabricated gypsum wall panel, which uses an assembly method to assemble the wall panel. However, during use, there are many structural connections, which can easily lead to installation deviations during construction and result in poor overall integrity during use.

[0005] At the same time, it lacks electromagnetic shielding capabilities, which greatly limits its use in areas with stringent electromagnetic environment requirements.

[0006] This invention addresses these issues by proposing an electromagnetic shielding green composite material, aiming to solve the aforementioned problems and making the material low in cost, easy to install, and highly stable and structurally compatible. Utility Model Content

[0007] To address the aforementioned shortcomings in the existing technology, this utility model provides an electromagnetic shielding green composite material.

[0008] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows:

[0009] An electromagnetic shielding green composite panel includes a wall panel body, an outer surface layer of the wall panel body, and an inner surface layer of the wall panel body. The wall panel body has a mating groove on its side and a mating block on the side of the wall panel body opposite to the mating groove. The mating block is positioned corresponding to the mating groove.

[0010] The wall panel body has an outer surface layer on the front and an inner surface layer on the back. The mating block is exposed from one side of the outer surface layer and the mating groove is exposed from one side of the inner surface layer.

[0011] The wall panel body includes a gypsum board base layer, an electromagnetic shielding functional layer, and a composite conductive absorbing layer. The front side of the composite conductive absorbing layer is connected to the outer surface of the wall panel body through the gypsum board base layer, the back side of the composite conductive absorbing layer is connected to the gypsum board base layer through the electromagnetic shielding functional layer, and the electromagnetic shielding functional layer is connected to the inner surface of the wall panel body through the gypsum board base layer.

[0012] As an improvement, the composite conductive absorbing layer and the electromagnetic shielding functional layer are connected by an epoxy resin adhesive.

[0013] As an improvement, there are at least two sets of the docking grooves and docking blocks, and the docking grooves and docking blocks are evenly distributed on the side of the wall panel body.

[0014] As an improvement, a rubber sealing gasket is provided on the inner side of the docking groove.

[0015] As an improvement, a protective net is provided between the outer surface layer of the wall panel body and the wall panel body to improve the surface strength of the wall panel body.

[0016] As an improvement, a soft, porous cushioning sponge is provided between the protective net and the main body of the wall panel.

[0017] As an improvement, the inner surface of the wall panel body is provided with uniformly distributed protrusions on the side away from the wall panel body.

[0018] As an improvement, noise reduction holes are uniformly provided on the inner surface of the wall panel body.

[0019] Compared to traditional technologies, the advantages of this utility model are:

[0020] 1. By configuring the gypsum wall panel with an outer composite conductive absorbing layer, a middle electromagnetic shielding layer, and an inner gypsum concrete base layer, using gypsum as the main material, the overall integrity of the wall panel is improved. Simultaneously, the outer conductive absorbing layer creates a conductive path to weaken electromagnetic waves, the middle electromagnetic shielding layer provides stable shielding, and the inner gypsum concrete base layer reduces polarization, amplifying the electromagnetic shielding effect. This multi-layered gypsum composite structure enables the gypsum wall panel to shield electromagnetic waves, expanding its practical applications.

[0021] 2. Recycling and utilization of various types of industrial waste: industrial by-product gypsum, carbon black, and slag improve the comprehensive performance of gypsum wall panels in terms of fire resistance, heat insulation, sound insulation, and waterproofing. It saves raw materials and is environmentally friendly. The overall strength of the wall is improved, and damage is reduced during transportation and installation. Lightweight aggregates such as perlite and gypsum aggregates are used to reduce the weight of the wall panels, making it possible to assemble and install gypsum wall panels.

[0022] 3. The use of mortise and tenon joints increases the contact area between wall panels during installation, resulting in better overall strength and stability. It also simplifies construction and increases installation efficiency.

[0023] 4. The two boards can be installed at a 90-degree angle, allowing for more diverse installation directions and greater flexibility in use. Attached Figure Description

[0024] Figure 1 For the explosion of this utility model Figure 1 ;

[0025] Figure 2 For the explosion of this utility model Figure 2 ;

[0026] Figure 3 For the explosion of this utility model Figure 3 ;

[0027] Figure 4 This is a schematic diagram of the structure of this utility model;

[0028] Figure 5 This is a connection diagram of the present invention;

[0029] Reference table for attached figures:

[0030] 1. Wall panel body; 2. Outer surface of wall panel body; 3. Inner surface of wall panel body; 4. Connecting groove; 5. Connecting block; 6. Rubber sealing gasket; 7. Protective net; 8. Buffer sponge; 9. Raised dots; 10. Noise reduction holes. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0032] It should be noted that the terms “front,” “back,” “left,” “right,” “up,” and “down” used in the following description refer to the directions shown in the attached diagram, while the terms “inside” and “outside” refer to the directions toward or away from the geometric center of a specific component, respectively.

[0033] To make the content of this utility model easier to understand, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Example

[0034] Combined with appendix Figure 1-4 The wall panel body 1 has an outer surface layer 2 on the front and an inner surface layer 3 on the back. The connecting block 5 is exposed from one side of the outer surface layer 2 and the connecting groove 4 is exposed from one side of the inner surface layer 3.

[0035] The wall panel body 1 includes a gypsum board base layer, an electromagnetic shielding functional layer, and a composite conductive wave-absorbing layer. The front side of the composite conductive wave-absorbing layer is connected to the outer surface layer 2 of the wall panel body through the gypsum board base layer, the back side of the composite conductive wave-absorbing layer is connected to the gypsum board base layer through the electromagnetic shielding functional layer, and the electromagnetic shielding functional layer is connected to the inner surface layer 3 of the wall panel body through the gypsum board base layer.

[0036] The composite conductive absorbing layer and the electromagnetic shielding functional layer are connected by epoxy resin adhesive.

[0037] The main body of the wall panel 1 is made entirely of recycled industrial by-product gypsum. The high-strength gypsum selected is derived from processed industrial by-product gypsum and is treated with specific technology to achieve the properties of blocking electromagnetic wave propagation, while providing structural strength to the wall panel, and also being water-resistant and weather-resistant.

[0038] The gypsum wall panels produced employ a multi-layer composite structure to effectively improve the electromagnetic shielding performance of gypsum materials, achieving wide-band electromagnetic shielding through synergistic effects.

[0039] The gypsum wall panels produced are 100-120mm thick. The thicker the gypsum material, the better the electromagnetic shielding effect. Due to the lightweight nature of gypsum and the fact that it is an industrial by-product gypsum derived from industrial waste recycling, the weight and cost of the produced materials are controlled.

[0040] The gypsum wall panels produced are made by adding additives to absorb and reflect electromagnetic waves, giving them electromagnetic shielding capabilities. In addition, they also have improved special properties such as waterproofing, fireproofing, and weather resistance.

[0041] The wall panel body 1 is divided into an outer surface layer 2 and an inner surface layer 3 on the front and rear sides. The outer surface layer 2 of the wall panel body is set to a smooth structure, while the inner surface layer 3 of the wall panel body is set to a rough structure. A chemical surfactant is applied to improve the compatibility and bonding force with the wall panel body 1.

[0042] The outer layer is a composite conductive absorbing layer: gypsum is a dielectric material, and its conductivity is improved after incorporating carbon black conductive filler, thus achieving electromagnetic shielding by creating conductive paths. 100 parts of gypsum powder and 2 parts of acetylene carbon black are mixed evenly, then mixed with water at a water-cement ratio of 0.5-0.6:1 and stirred evenly. Subsequently, 30 parts of expanded perlite granules and a small amount of organosilicon-modified styrene-acrylic emulsion are added, and stirring continues until evenly mixed. The mixture is then poured into a mold, allowed to stand for demolding, and allowed to dry completely.

[0043] The middle layer is an electromagnetic shielding functional layer: it adopts an MXene-CB composite thin film layer with a thickness of 80μm. The synergistic effect of MXene and carbon black CB can achieve stable electromagnetic shielding performance in a wide frequency range of 8.2-12.4GHz, and has good mechanical properties, excellent thermal stability and flame retardancy.

[0044] The inner layer is a gypsum concrete base layer. The gypsum raw material can also be derived from industrial by-product gypsum, which, after processing, enhances the overall performance of the partition wall panel, such as sound insulation and fire resistance, and provides support for the electromagnetic shielding functional layer. This concrete layer contains 0.75% nano-carbon black and uses a gypsum-slag composite cementitious material, in which the slag content is 30%, the composite alkaline activator is 7%, and the remainder is industrial by-product gypsum. The compressive strength of this composite material reaches 13.95 MPa, and the softening coefficient is 0.72, providing a high-strength foundation for the nano-carbon black concrete layer. Simultaneously, phosphogypsum aggregate is incorporated, with its dosage reaching up to 80% of the coarse sand, to replace natural sand. Perlite is added to increase the gypsum dosage to 8%, further reducing its apparent density. This allows the layer to simultaneously possess lightweight, high strength, and thermal insulation properties, meeting the requirements of new lightweight thermal insulation building materials. Utilizing the nano-size effect and high surface activity of nano-carbon black, the porosity of concrete is further reduced, capillary pores are filled, and flexural and compressive strength is improved. It also possesses good pressure sensitivity and conductivity, which can reduce the degree of polarization, shorten the polarization time, enhance the electromagnetic shielding effect, and has excellent compatibility with the outer gypsum board material. Example

[0045] Combined with appendix Figure 1-4 The wall panel body 1 has a mating groove 4 on its side, and a mating block 5 is provided on the side of the wall panel body 1 opposite to the mating groove 4. The mating block 5 is positioned corresponding to the mating groove 4.

[0046] The wall panel body 1 has an outer surface layer 2 on the front and an inner surface layer 3 on the back. The connecting block 5 is exposed from one side of the outer surface layer 2 and the connecting groove 4 is exposed from one side of the inner surface layer 3.

[0047] There are at least two sets of the docking grooves 4 and docking blocks 5, and the docking grooves 4 and docking blocks 5 are evenly distributed on the side of the wall panel body 1.

[0048] A rubber sealing gasket 6 is provided on the inner side of the docking groove 4.

[0049] Based on Embodiment 1, the mating block 5 and the mating groove 4 form an interlocking structure, using the interlocking action between the mating block 5 and the mating groove 5 to fix the two wall panel bodies 1 together. The sealing effect of the rubber sealing gasket 6 improves the sealing performance between adjacent wall panel bodies 1, thereby preventing water leakage during use. The mating block 5 protrudes from the outer surface layer 2 of the wall panel body, and the mating groove 4 protrudes from the inner surface layer 3 of the wall panel body, ensuring the aesthetics of the two wall panel bodies 1 when joined.

[0050] Combined with appendix Figure 1-3 The outer surface layer 2 of the wall panel body is provided with a protective net 7 between the wall panel body 1 and the outer surface layer 2 of the wall panel body to improve the surface strength of the wall panel body. A soft and porous buffer sponge 8 is provided between the protective net 7 and the wall panel body 1. The inner surface layer 3 of the wall panel body is provided with protrusions 9 evenly on the side away from the wall panel body 1. Noise reduction holes 10 are evenly provided on the inner surface layer 3 of the wall panel body.

[0051] The friction protrusions 9 increase the contact area with the wall surface, thereby improving the adhesion and fixation. The noise reduction holes 10 also provide a certain sound absorption effect. The protective net 7 is made of nylon weaving, which increases the strength of the outer surface of the wall panel body 1. The cushioning sponge 8 provides a certain cushioning effect, further protecting the wall panel.

[0052] The above description is only a preferred embodiment of this utility model patent and is not intended to limit this utility model patent. Any modifications, equivalent substitutions and improvements made within the spirit and principles of this utility model patent should be included within the protection scope of this utility model patent.

Claims

1. An electromagnetic shielding green composite board, comprising a wallboard body (1), a wallboard body outer surface layer (2) and a wallboard body inner surface layer (3), characterized in that: the wallboard body (1) is provided with a butt joint groove (4) on one side, and a butt joint block (5) is arranged on the side opposite to the butt joint groove (4) of the wallboard body (1), and the butt joint block (5) corresponds to the butt joint groove (4) in position; the wallboard body (1) is provided with the wallboard body outer surface layer (2) on the front side, and the wallboard body inner surface layer (3) on the back side, the butt joint block (5) is exposed from one side of the wallboard body outer surface layer (2), and the butt joint groove (4) is exposed from one side of the wallboard body inner surface layer (3); the wallboard body (1) comprises a gypsum board base layer, an electromagnetic shielding functional layer and a composite conductive wave-absorbing layer, the composite conductive wave-absorbing layer is connected with the wallboard body outer surface layer (2) through the gypsum board base layer on the front side, the composite conductive wave-absorbing layer is connected with the gypsum board base layer through the electromagnetic shielding functional layer on the back side, and the electromagnetic shielding functional layer is connected with the wallboard body inner surface layer (3) through the gypsum board base layer.

2. The electromagnetic shielding green composite board according to claim 1, characterized in that: the composite conductive wave-absorbing layer and the electromagnetic shielding functional layer are connected through an epoxy resin adhesive.

3. The electromagnetic shielding green composite board according to claim 1, characterized in that: the butt joint groove (4) and the butt joint block (5) are at least two groups, and the butt joint groove (4) and the butt joint block (5) are uniformly distributed on the side of the wallboard body (1).

4. The electromagnetic shielding green composite board according to any one of claims 1 or 3, characterized in that: a rubber sealing gasket (6) is arranged in the butt joint groove (4).

5. The electromagnetic shielding green composite board according to claim 1, characterized in that: a protective net (7) for improving the surface strength of the wallboard body is arranged between the wallboard body outer surface layer (2) and the wallboard body (1).

6. The electromagnetic shielding green composite board according to claim 5, characterized in that: a soft porous buffer sponge (8) is arranged between the protective net (7) and the wallboard body (1).

7. The electromagnetic shielding green composite board according to claim 1, characterized in that: protrusions (9) are uniformly arranged on the side of the wallboard body inner surface layer (3) away from the wallboard body (1).

8. The electromagnetic shielding green composite board according to any one of claims 1 or 7, characterized in that: noise reduction holes (10) are uniformly arranged on the wallboard body inner surface layer (3).

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